The concept of intraductal papillary neoplasm of the bile duct(IPNB)has gained recognition as a discrete entity[1,2],possessing many features including multiplicity[3,4],mucin production[3],slow progression[3,5],vario...The concept of intraductal papillary neoplasm of the bile duct(IPNB)has gained recognition as a discrete entity[1,2],possessing many features including multiplicity[3,4],mucin production[3],slow progression[3,5],various morphology[6,7],easy sloughing and seeding[8],and having unique risk factors[2,9-11].We have previously proposed a morphologic classification[6]and a progression model of IPNB[12].展开更多
The theoretical research of cable-driven mechanisms is developed with its broad applications. The first prototype of cable-driven mechanisms is RoboCrane, which was developed by the National Institute of Standards and...The theoretical research of cable-driven mechanisms is developed with its broad applications. The first prototype of cable-driven mechanisms is RoboCrane, which was developed by the National Institute of Standards and Technology （NIST）. Then many excellent properties were developed and they have a variety of applications such as aerospace, aircraft and automobile industries [1]. Example application for RoboCrane in the field of aircraft mainte- nance is equipped with a quick-change mechanism to remove the robot arm remotely.展开更多
The risk assessment of contract conclusion is the primary and key part of equipment purchase contract risk management. In this paper, based on the fuzzy characteristics of contract risks, and overcoming the traditiona...The risk assessment of contract conclusion is the primary and key part of equipment purchase contract risk management. In this paper, based on the fuzzy characteristics of contract risks, and overcoming the traditional disadvantages of analytic hierarchy process （AHP）, the fuzzy analytic hierarchy process （FAHP） of contract conclusion is proposed for meeting the actual need of equipment procurement contract risk assessment, and implementing the risk factors qualitative and quantitative assessments of different working nodes in contract conclusion. Thus, a scientific and reliable important basis is provided for the risk management of equipment procurement contract.展开更多
There has been an increasing interest in studying thesis writing genre in the past two decades, however, the study on how social science doctoral students construct their academic identity in 12 thesis writing still r...There has been an increasing interest in studying thesis writing genre in the past two decades, however, the study on how social science doctoral students construct their academic identity in 12 thesis writing still remains underexplored to date. This paper attempts to fill the gap by examining the ways in which a cohort of Chinese social science doctoral students constructed their academic identity in the process of drafting, revising, and shaping the Discussion ＆ Conclusion section of their L2 theses. The study adopted multi-case approaches and in-depth interviews. It found that the process of the students＇ academic identity construction was fluid and dynamic. These students gradually evolved from novice student writers at the initial stage to more skilled academic writers at the later stage. The findings generated from this study offer significant implications for L2 writing pedagogy in China.展开更多
The first liver transplantation(LT)in humans was performed by Thomas Starzl on March 1,1963[1,2](Fig.1).During the period 1963-1983,this challenging procedure was performed in four centers only,one in the USA and thre...The first liver transplantation(LT)in humans was performed by Thomas Starzl on March 1,1963[1,2](Fig.1).During the period 1963-1983,this challenging procedure was performed in four centers only,one in the USA and three in Western Europe:Denver,Cambridge,Hannover and Groningen.Their collected experience including only 540 cases(meaning 27(!)cases yearly)was the basis of the 1983 National Institutes of Health(NIH)development consensus conference leading to the conclusion that LT could become“a promising alternative to the current therapy in the management of the late phase of several forms of serious liver disease…candidates are those who exhausted alternative medical and surgical treatments…and are approaching the terminal phase of their illness”.Patients presenting liver tumors and inherited,liver based,metabolic diseases could also be considered for LT[3].This conference put forward ten absolute and five relative contraindications restricting thereby the access to LT to a minority of very well selected liver diseased patients.展开更多
Coffee is one of the world's favorite and most popular beverages,the third most popular beverage after water and tea.For many people,it is an indispensable habit before going to work and a socialization tool for t...Coffee is one of the world's favorite and most popular beverages,the third most popular beverage after water and tea.For many people,it is an indispensable habit before going to work and a socialization tool for the rest of the day.In general,the average consum ption varies from 2 to6 cups per day.What are the health implications?Given this consum ption,the benefits are actually greater than the risks.This is the conclusion of a careful study published in the New England Journal of Medicine(van Dam et al.,2020).展开更多
Dear Editor,We have read with interest the article by Li et al[1].In the response to this article[1]which is a well thought out and written paper,I would like to draw attention to some critical points in this study an...Dear Editor,We have read with interest the article by Li et al[1].In the response to this article[1]which is a well thought out and written paper,I would like to draw attention to some critical points in this study and add some comments to the results and the conclusion of the study which authors have detected.In the Li et al’s[1]study,it is detected that,choroidal thickness is significantly negatively correlated with body mass index(BMI)and choroidal thickness is decreased in people with overweight or obesity.展开更多
Only when the foundation is strong will the state be safe and stable.THE concept that"the people are the foundation of a state"is the best expression of the people-centered philosophy of ancient China.Past C...Only when the foundation is strong will the state be safe and stable.THE concept that"the people are the foundation of a state"is the best expression of the people-centered philosophy of ancient China.Past Chinese sages and philosophers reached this conclusion in their study of state governance amid the rise and fall of dynasties over thousands of years.Based on the belief that the people's support of state power is vital for its success,this precept has inspired policies and practices aimed at nurturing,benefiting and enriching the people throughout Chinese history.展开更多
Calibration of weather radar is a main means to ensure the performance and data accuracy of weather radar.In the past,the calibration method was the static instrument calibration method of weather radar,but the full-l...Calibration of weather radar is a main means to ensure the performance and data accuracy of weather radar.In the past,the calibration method was the static instrument calibration method of weather radar,but the full-link calibration and comparison calibration stations of external radiation sources have not been conducted.In order to achieve truth calibration and improve the accuracy and consistency of radar data in the whole network,the full link calibration of the metal ball was carried out in Nanchang radar station in August 2024.In this paper,conclusions on the calibration of the metal ball and the problems in the calibration process as well as some experience were introduced.展开更多
Super rice is an essendal part of China＇s rice production. Through survey on actual situation of 1568 households of rice growers in Heilongjiang, Hunan and Zhejiang provinces, this paper focused on influence of super...Super rice is an essendal part of China＇s rice production. Through survey on actual situation of 1568 households of rice growers in Heilongjiang, Hunan and Zhejiang provinces, this paper focused on influence of super rice development on increase of China＇s grain yield, influence on increase of rice growers＇ economic in- come, difference in production cost and profit between the North and the South, as well as profit percentage of super rice in production, processing, and sales. It obtained following results： rice price determines rice growers＇ income; expansion of super rice extension area plays a great role in increase of China＇s grain yield; by 2015 and 2020, keeping the yield of other crops not changed, merely the extension of super rice can increase grain for 5 million tons and 11 million tons separately; super rice significantly increases rice growers＇ economic income; for production cost of super rice, the South is higher than the North, and the profit ratio of cost is up to 35.54% on average; with respect of profit in production, processing, and sales, the ratio is 1：2：1.5; with the yield of other crops unchanged, every increase of 1% in area percentage of super rice to rice will additionally produce 1 million tons of grain for China, which is equivalent to saving the yield of 133 300 hm2 farmland and can additional feed 3.5 million people. In view of importance of super rice production, at the same time of strengthening research on super rice variety, it is required to accelerate expanding production area of super rice in suitable areas. Since the development of super rice can support China＇s ration demand of increasing population, China should make effort to realize ＂one yuan for one mu＂ financial subsidy for super rice of main grain production provinces and counties. Besides, China should establish special financial plan for extension of super rice.展开更多
The special issue deals with the Cretaceous-Tertiary deserts in southwestern China and relevant sedimentological problems about deserts. The study area is located between 101°10＇- 107°00＇E and 28°00＇...The special issue deals with the Cretaceous-Tertiary deserts in southwestern China and relevant sedimentological problems about deserts. The study area is located between 101°10＇- 107°00＇E and 28°00＇-30°40′ N. The ancient desert study is so little in China that there has not been a systematic report about it up to now. Based on the study in many ways on Cretaceous-Tertiary deserts in southwestern China, plentiful data have been obtained. Though it is still a bit rough, the study is a good beginning of the ancient desert study in China. The main ideas and conclusions are summarized as follows.展开更多
Most recently,Liu and Chen[Chin.Phys.Lett.30(2013)079901]used the tool of information theory to analyze the security of our two improved versions of the MX protocol[Chin.Phys.Lett.30(2013)040305],and they found out th...Most recently,Liu and Chen[Chin.Phys.Lett.30(2013)079901]used the tool of information theory to analyze the security of our two improved versions of the MX protocol[Chin.Phys.Lett.30(2013)040305],and they found out that our two improved versions still have the information leakage problem.After revisiting them with the tool of information theory again,with respect to the security,we draw the same conclusion as Liu and Chen.In addition,we point out that how to use a single quantum state as the sole quantum resource to design a bidirectional quantum secure direct communication protocol without information leakage is still a big challenge that needs to be solved.展开更多
文摘The concept of intraductal papillary neoplasm of the bile duct(IPNB)has gained recognition as a discrete entity[1,2],possessing many features including multiplicity[3,4],mucin production[3],slow progression[3,5],various morphology[6,7],easy sloughing and seeding[8],and having unique risk factors[2,9-11].We have previously proposed a morphologic classification[6]and a progression model of IPNB[12].
基金Supported by National Natural Science Foundation of China(Grant No.51575150)
文摘The theoretical research of cable-driven mechanisms is developed with its broad applications. The first prototype of cable-driven mechanisms is RoboCrane, which was developed by the National Institute of Standards and Technology （NIST）. Then many excellent properties were developed and they have a variety of applications such as aerospace, aircraft and automobile industries [1]. Example application for RoboCrane in the field of aircraft mainte- nance is equipped with a quick-change mechanism to remove the robot arm remotely.
文摘The risk assessment of contract conclusion is the primary and key part of equipment purchase contract risk management. In this paper, based on the fuzzy characteristics of contract risks, and overcoming the traditional disadvantages of analytic hierarchy process （AHP）, the fuzzy analytic hierarchy process （FAHP） of contract conclusion is proposed for meeting the actual need of equipment procurement contract risk assessment, and implementing the risk factors qualitative and quantitative assessments of different working nodes in contract conclusion. Thus, a scientific and reliable important basis is provided for the risk management of equipment procurement contract.
基金part of the project entitled "Study of the Development of Chinese Students' Generic Competence",supported by the National Grant for Social Sciences (No: 10BYY088)supported by Wuhan University Teaching Research grant entitled "A Multi-model Construction of Curriculum System for English Speciality" (No: 2011303)
文摘There has been an increasing interest in studying thesis writing genre in the past two decades, however, the study on how social science doctoral students construct their academic identity in 12 thesis writing still remains underexplored to date. This paper attempts to fill the gap by examining the ways in which a cohort of Chinese social science doctoral students constructed their academic identity in the process of drafting, revising, and shaping the Discussion ＆ Conclusion section of their L2 theses. The study adopted multi-case approaches and in-depth interviews. It found that the process of the students＇ academic identity construction was fluid and dynamic. These students gradually evolved from novice student writers at the initial stage to more skilled academic writers at the later stage. The findings generated from this study offer significant implications for L2 writing pedagogy in China.
文摘The first liver transplantation(LT)in humans was performed by Thomas Starzl on March 1,1963[1,2](Fig.1).During the period 1963-1983,this challenging procedure was performed in four centers only,one in the USA and three in Western Europe:Denver,Cambridge,Hannover and Groningen.Their collected experience including only 540 cases(meaning 27(!)cases yearly)was the basis of the 1983 National Institutes of Health(NIH)development consensus conference leading to the conclusion that LT could become“a promising alternative to the current therapy in the management of the late phase of several forms of serious liver disease…candidates are those who exhausted alternative medical and surgical treatments…and are approaching the terminal phase of their illness”.Patients presenting liver tumors and inherited,liver based,metabolic diseases could also be considered for LT[3].This conference put forward ten absolute and five relative contraindications restricting thereby the access to LT to a minority of very well selected liver diseased patients.
文摘Coffee is one of the world's favorite and most popular beverages,the third most popular beverage after water and tea.For many people,it is an indispensable habit before going to work and a socialization tool for the rest of the day.In general,the average consum ption varies from 2 to6 cups per day.What are the health implications?Given this consum ption,the benefits are actually greater than the risks.This is the conclusion of a careful study published in the New England Journal of Medicine(van Dam et al.,2020).
文摘Dear Editor,We have read with interest the article by Li et al[1].In the response to this article[1]which is a well thought out and written paper,I would like to draw attention to some critical points in this study and add some comments to the results and the conclusion of the study which authors have detected.In the Li et al’s[1]study,it is detected that,choroidal thickness is significantly negatively correlated with body mass index(BMI)and choroidal thickness is decreased in people with overweight or obesity.
文摘Only when the foundation is strong will the state be safe and stable.THE concept that"the people are the foundation of a state"is the best expression of the people-centered philosophy of ancient China.Past Chinese sages and philosophers reached this conclusion in their study of state governance amid the rise and fall of dynasties over thousands of years.Based on the belief that the people's support of state power is vital for its success,this precept has inspired policies and practices aimed at nurturing,benefiting and enriching the people throughout Chinese history.
文摘Calibration of weather radar is a main means to ensure the performance and data accuracy of weather radar.In the past,the calibration method was the static instrument calibration method of weather radar,but the full-link calibration and comparison calibration stations of external radiation sources have not been conducted.In order to achieve truth calibration and improve the accuracy and consistency of radar data in the whole network,the full link calibration of the metal ball was carried out in Nanchang radar station in August 2024.In this paper,conclusions on the calibration of the metal ball and the problems in the calibration process as well as some experience were introduced.
基金Supported by Super Rice Program for Agricultural Scientific&Technological Innovation Project of Chinese Academy of Agricultural SciencesSpecial Project of Public Welfare Industry of Ministry of Agriculture(201203029)Special Project for Construction of Modern Agricultural Industrial Technology System(CARS-01-09B)~~
文摘Super rice is an essendal part of China＇s rice production. Through survey on actual situation of 1568 households of rice growers in Heilongjiang, Hunan and Zhejiang provinces, this paper focused on influence of super rice development on increase of China＇s grain yield, influence on increase of rice growers＇ economic in- come, difference in production cost and profit between the North and the South, as well as profit percentage of super rice in production, processing, and sales. It obtained following results： rice price determines rice growers＇ income; expansion of super rice extension area plays a great role in increase of China＇s grain yield; by 2015 and 2020, keeping the yield of other crops not changed, merely the extension of super rice can increase grain for 5 million tons and 11 million tons separately; super rice significantly increases rice growers＇ economic income; for production cost of super rice, the South is higher than the North, and the profit ratio of cost is up to 35.54% on average; with respect of profit in production, processing, and sales, the ratio is 1：2：1.5; with the yield of other crops unchanged, every increase of 1% in area percentage of super rice to rice will additionally produce 1 million tons of grain for China, which is equivalent to saving the yield of 133 300 hm2 farmland and can additional feed 3.5 million people. In view of importance of super rice production, at the same time of strengthening research on super rice variety, it is required to accelerate expanding production area of super rice in suitable areas. Since the development of super rice can support China＇s ration demand of increasing population, China should make effort to realize ＂one yuan for one mu＂ financial subsidy for super rice of main grain production provinces and counties. Besides, China should establish special financial plan for extension of super rice.
文摘The special issue deals with the Cretaceous-Tertiary deserts in southwestern China and relevant sedimentological problems about deserts. The study area is located between 101°10＇- 107°00＇E and 28°00＇-30°40′ N. The ancient desert study is so little in China that there has not been a systematic report about it up to now. Based on the study in many ways on Cretaceous-Tertiary deserts in southwestern China, plentiful data have been obtained. Though it is still a bit rough, the study is a good beginning of the ancient desert study in China. The main ideas and conclusions are summarized as follows.
基金Supported by the National Natural Science Foundation of China under Grant No 60972071the Natural Science Foundation of Zhejiang Province under Grant Nos Y6100421 and LQ12F02012.
文摘Most recently,Liu and Chen[Chin.Phys.Lett.30(2013)079901]used the tool of information theory to analyze the security of our two improved versions of the MX protocol[Chin.Phys.Lett.30(2013)040305],and they found out that our two improved versions still have the information leakage problem.After revisiting them with the tool of information theory again,with respect to the security,we draw the same conclusion as Liu and Chen.In addition,we point out that how to use a single quantum state as the sole quantum resource to design a bidirectional quantum secure direct communication protocol without information leakage is still a big challenge that needs to be solved.
